Finding the Fourth Proportional to 3,650.57, 5,037.57 and 2,158.13

Step by Step Solution

1. Step 1: Write the proportion equation
   3,650.57 : 5,037.57 = 2,158.13 : x
2. Step 2: Convert to fraction form
   3,650.57/5,037.57 = 2,158.13/x
3. Step 3: Cross multiply
   3,650.57x = 5,037.57 × 2,158.13
4. Step 4: Simplify right side
   3,650.57x = 10,871,730.94
5. Step 5: Solve for x
   x = 10,871,730.94/3,650.57
6. Step 6: Final answer
   x = 2,978.09